notebrain-cli vs Weave

notebrain-cli and Weave are both productivity tracked by AIDiveForge. Below is a side-by-side comparison of pricing, capabilities, platforms, and ownership — sourced from each tool's live website and verified before publishing.

notebrain-cli

NoteBrain indexes your Markdown notes into a local ChromaDB vector database and gives you semantic search, wikilink graph traversal, and hidden-connection discovery through structured CLI output. Every bit of it runs on your machine — no API calls, no cloud dependency, no data leaving the host. The structured output is designed to be consumed directly by shell pipelines or LLM tool-use workflows, which means a coding agent can query your vault the same way it queries a function. The ceiling appears when your query logic needs to span multiple hops or filter by metadata at scale — ChromaDB local mode is not a production vector database, and the index will need a rebuild whenever the vault structure shifts significantly.

Weave

Weave watches your screen via OCR, pulls Gmail and Calendar data, and stores all of it locally in SQLite — so the context it works from is yours and stays on your machine. The morning brief surfaces to-dos, overdue commitments, and response debt before your day starts. When you need action rather than summary, a browser agent plans and executes steps toward a goal, and a separate macOS agent drives native apps by voice or intent. The ceiling appears early: this is a solo developer project at 72 commits with no hosted fallback, no API, and no documented path for teams or shared memory.

Attribute	notebrain-cli	Weave
Pricing	Free	Free
Free trial	No	No
Open source	Yes	Yes
Has API	No	No
Self-hosted option	Yes	Yes
Platforms	Linux (binaries); source compiles on other platforms	macOS
Pros	Fully local ChromaDB indexing with zero network calls, so your vault contents never touch an external server — which matters when notes contain unpublished code, client context, or anything you cannot route through a third-party API. Structured CLI output designed for agent tool-use, so a coding agent can query your vault the same way it calls a function — rather than scraping unformatted text and hoping the LLM parses it correctly. Wikilink graph traversal alongside semantic search, so you get two retrieval signals instead of one — structurally connected notes surface even when the embedding similarity score would have missed them. MIT license with self-hosted operation, so there is no vendor lock-in, no pricing gate on features, and no dependency on a service that can change its terms or go offline. Ships with an agent skill definition and OpenCode integration documented in the repository, so wiring it into an existing agent setup does not require building the tool-call interface from scratch.	All captured data — screen OCR, email, calendar, contacts — is stored locally in SQLite, so you are not trading your personal context for a vendor's data pipeline. The browser agent accepts a goal and executes the steps to reach it without per-step instruction, so repetitive research or form-filling tasks run without you staying on the loop. Commitment and response-debt tracking surfaces what you said you would do and have not done yet, which means the morning brief catches the dropped thread before the other person follows up. Native macOS app control by voice or stated goal means automation extends beyond the browser to the full desktop environment, so you are not limited to web-only task execution. Fully free with no paid-only features and self-hosted by design, so there is no pricing gate on any capability and no subscription to cancel when the project goes dormant.
Cons	There is no persistent HTTP API — the CLI is the only interface, which means any workflow that needs a long-running queryable endpoint (a web app, a multi-agent system polling for context, a teammate's machine) cannot use NoteBrain without wrapping it in a custom server layer that the project does not provide. The local ChromaDB backend is not designed for large-scale or high-frequency writes: when vault structure changes significantly, the index requires a rebuild, and teams with vaults that evolve rapidly report that the rebuild cycle interrupts agent workflows that depend on fresh results. A team whose vault scales to tens of thousands of frequently-updated notes, or whose agents need concurrent read access from multiple processes, will hit local ChromaDB's performance and concurrency limits — at that point, the path forward is a dedicated vector database (Qdrant, Weaviate, or a hosted alternative) with a custom ingestion pipeline, which means migrating off NoteBrain entirely.	The setup requires cloning the repo and running npm dev commands — there is no packaged installer documented beyond electron-builder config. The first OS update that breaks an Electron or native dependency lands on you to debug, with no issue history and no maintainer response SLA. There is no API surface. Any workflow that needs Weave's memory or agents accessible from another tool, script, or service hits a dead end — teams who need that integration path switch to a self-hosted open-source alternative like Mem0 or a custom LangChain memory layer. The macOS agent and browser agent have no documented multi-user or profile separation. A household or small team that wants shared context or separate memory spaces finds no path forward in the current architecture — this is a single-user, single-machine design.

Bottom line

notebrain-cli and Weave are closely matched on pricing model, openness, and API availability — pick by feature set and platform support in the table above.

Frequently asked questions

What is the difference between notebrain-cli and Weave?

notebrain-cli is Free and open source, while Weave is Free and open source. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is notebrain-cli better than Weave?

It depends on your workflow. Use the side-by-side attributes (pricing, open source, API, self-hosted, platforms) to decide. AIDiveForge does not rank a universal winner — we publish verified facts so you can choose.